Cutter head, boring jig and device and process for sea bottom bo

Details Cutter head, boring jig and device and process for sea bottom bo Cutter head, boring jig and device and process for sea bottom bo

1997-07-16

1999-08-03

Tsay, Frank

Boring or penetrating the earth

Boring a submerged formation

Boring with submersible vertically movable guide

175391, 175396, E21B 1026, E21B 712

Patent

active

059312351

ABSTRACT:
A cutter head for retrieving earth samples, in particular for taking underwater samples, has, because of frustum-shaped cutting wheels, an approximately round bore cross section. In an associated boring jig, a tube with a cross section corresponding approximately to the bore cross section is placed above the cutter head. With a regrasping system, the tube can be moved vertically relative to a work table lying on the bore surface. The boring jig may be lowered from a ship to the sea bottom to conduct the boring process.

REFERENCES:
patent: 1391626 (1921-09-01), Gilthorpe
patent: 1524776 (1925-02-01), Boland et al.
patent: 1747908 (1930-02-01), Seifert
patent: 1826059 (1931-10-01), Dunn et al.
patent: 2021219 (1935-05-01), Bell
patent: 2049543 (1936-08-01), Kammerer
patent: 4049067 (1977-09-01), Dively
patent: 4682660 (1987-07-01), Barthelemy et al.

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